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J/AJ/129/2119       Properties for 165 dwarf galaxies          (Spekkens+, 2005)

The cusp/core problem in galactic halos: long-slit spectra for a large dwarf galaxy sample. Spekkens K., Giovanelli R., Haynes M.P. <Astron. J., 129, 2119-2137 (2005)> =2005AJ....129.2119S
ADC_Keywords: Galaxies, spectra ; Radial velocities ; Rotational velocities Keywords: dark matter - galaxies: dwarf - galaxies: halos - galaxies: kinematics and dynamics - galaxies: structure Abstract: We derive inner dark matter halo density profiles for a sample of 165 low-mass galaxies using rotation curves obtained from high-quality, long-slit optical spectra assuming minimal disks and spherical symmetry. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 85 165 Sample properties and measured inner halo slopes
Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 6 I6 --- Name The object UGC/AGC name (1) 8- 9 I2 h RAh Hour of Right Ascension (J2000) 11- 12 I2 min RAm Minute of Right Ascension (J2000) 14- 17 F4.1 s RAs Second of Right Ascension (J2000) 19 A1 --- DE- Sign of the Declination (J2000) 20- 21 I2 deg DEd Degree of Declination (J2000) 23- 24 I2 arcmin DEm Arcminute of Declination (J2000) 26- 27 I2 arcsec DEs Arcsecond of Declination (J2000) 29- 33 I5 km/s HRV Heliocentric optical radial velocity (2) 35- 37 I3 Mpc Dist Distance (3) 39- 42 F4.1 mag Imag Total apparent I band magnitude (4) 44- 48 F5.1 arcsec Ro Optical radius (5) 50- 53 F4.1 mag/arcsec2 SB Extrapolated I band disk central surface brightness (6) 55- 56 I2 deg Inc Inclination (7) 58- 60 I3 km/s Vrot Rotational velocity (8) 62- 64 I3 km/s Vo Best fit polyex curve amplitude (9) 66- 69 F4.1 arcsec rpe Best fit polyex curve scale-length (9) 71- 75 F5.2 arcsec beta Best fit polyex curve outer RC slope (9) 77- 80 F4.2 --- alpha Measured inner slope value (10) 82- 85 F4.2 --- e_alpha Error in alpha
Note (1): Uppsala General Catalogue (Nilson 1973, Cat. VII/26) number where available, or else our private Arecibo General Catalogue database number. Note (2): Measured from best-fit URC curve to long-slit data. See section 3. Note (3): Computed from VSol and (RA, Dec) using the multi-attractor flow model of Tonry et al. 2000ApJ...530..625T, with H0=70km/s/Mpc. Note (4): Extrapolated to 8 optical scale-lengths (Haynes et al. 1999AJ....117.1668H). Note (5): Radius encompassing 83% of the total I-band light (Haynes et al. 1999AJ....117.1668H). Note (6): Corrected for inclination (Haynes et al. 1999AJ....117.1668H). Note (7): Obtained from the I-band disk ellipticity (Haynes et al. 1999AJ....117.1668H) assuming an intrinsic disk axial ratio of 0.2. Note (8): Taken as the velocity of the best-fit polyex curve at Radopt; see the "Note (9)" section below and Eq.(2) of paper. Note (9): the polyex relates the rotation curve (RC) as (Eq. 2): V(r) = Vo (1 - exp(-r/rpe)) (1 + beta r / rpe) Note (10): the inner profile (for low values of r) define the density profile ρ(r) ∝ r-alpha
History: From electronic version of the journal
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 06-Sep-2005
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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